2 Which chemical reaction involves the fewest oxygen atoms? 3 F 2AgNO, + K, SOAg, SO, + 2KNO G4Fe + 6H 0 + 30 → 4Fe(OH) H6C0, + 6H 0 CH,206 + 602 3 C, H, + 30 > 200, + 21,0

1. 1 mole of anything contains 6.022x10^23 pieces  

d  

2. a  

3. c, number  

5. 1.24x10^24atoms / 6.022x10^23atoms/mole = 2moles h2 atoms  

6. fe2br3 mass = 2moles x mass fe + 3 moles x mass br  

molar mass = grams / number of moles = g/mole  

to find moles = g / molar mass  

to find mass = g = molar mass / moles

my dad did alot of meth and ace cheeks

the answers would be

the first one and the second one

a gas, having a molecular weight of 13 kg/kmol and a kinematic viscosity of 0.25 cm2/s, flows through a pipe 0.25 m internal diameter and 5 km long at the rate of 0.4 m3/s and is delivered at atmospheric pressure.